Panacea (слэш)

Katsuki was not in Tokyo when it began. He was on an away-mission in Southern Japan.
First came the false twilight. Something covered the skies with a dull, grey haze even though it was mid-morning and the weather forecast called for clear skies.
10 hours later, the deaths began.
The world falls apart. A BKDK story of love and desperate hope in the time of a zombie apocalypse.